We need the classic view because it shows a cookie based popup, this already works with a script-editor webpart, unfortunately modern view doesn't allow scripting. Asking for any other solution?
Our problem is that invited users can't switch to classic view. I had setted classic user experience in advanced options but other users still view only the modern. with my admin account i can easly switch between the views.
Finally, we want to set the deafult-permission level for invited users to a custom permission, that costum permission doesn't allow to delete items, how we can perform that?